(57) Two embodiments of the invention are described, namely a machine for performing an
adhesive-applying operation progressively along marginal portions of the bottoms of
lasted shoes and a machine for performing a roughing operation progressively along
side wall portions of lasted shoes, each machine comprising a tool holder (670) for
supporting a tool (20) for operating along three axes (X-, Y- and Z-axes) upon a workpiece
surface, e.g. marginal portions of a shoe bottom. In addition the tool holder (670)
is capable of pivoting in two directions, widthwise and lengthwise of the shoe bottom,
about a point (P), but without displacement of said point in relation to the shoe
support by reason of such pivotal movement. The movement along the various axes and
the pivotal movement are all controlled by n.c. motors, e.g. stepping motors ((84),
(144), (122), 698, 700), and operator-actuatable means is provided for enabling the
path of such tool, including such pivotal movement, to be digitised under operator
control.
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